폐타이어로 성형제조된 부정형 과립담체에 부착된 미생물의 측정방법

박종웅,송주형 대한상하수도학회 2003 상하수도학회지 Vol.17 No.2

This study was carried out to know the physicochemical properties and determine the measurement method of attached biomass in irregular shape granular (ISG) media molded with waste tire. The size of ISG media and specific surface area were Φ4-10㎜ and 0.00412㎡/g, respectively. The using of pretreatment agents as 0.8N CuSO_4-0.7N Sulfamic acid was proper to prevent self-oxidation of attached biomass on ISG media. The detaching method of attached biomass in ISG media was suitable for conducting ultrasonic and alkali treatment at the same time. The optimum alkali concentration and washing time were 0.125N NaOH and 120min, respectively. Finally, it was concluded that the result of this study could be establishing as a measurement method of attached biomass on ISG media molded with waste tire.

人蔘赤腐病菌의 榮養生理學的 硏究

金倧熙,李敏雄,李榮俊 동국대학교 농림과학연구소 1969 農林科學 論文集 Vol.3 No.-

As a result of an elementary study for the physiological nutrition of setting up the composition of synthetic medium in Erwinia-araliavorus, the effect of hydrogen ion concentration, several kinds of carbon sources, inorganic nitrogen sources, phosphate sources, micro metals and concentration of potassium phosphate mono-basic, Potassium phosphate di-basic on the growth of this bacteria have been investigated and are summarized as follows; 1. The effects of hydrogen ion concentration on the growth of this bacteria in the basal medium, optimum hydrogen ion concentration range was 7.5. After incubation the hydrogen ion concentration altered it's formal medium concentration. The strong acidity changed into weak acidity, the strong alkali into weak alkali. 2. The effects of several kinds of carbon sources on the growth of this bacteria, Soluble starch, Inulin and Maltose showed best results and followed by Sucrose and Mannite. Organic acid in the carbon sources was not used effectively as nutritional elements. After incubation hydrogen ion concentration was changed into weak acidity. 3. In the effect of nitrogen sources on the growth of the bacteria, Alanine as a organic compounds and KNO_3 as a inorganic compounds were respectively effective on the growth. L-Isoleucine and NaNO_2 were poor effect. Among this nitrogen sources, Alanine showed the best result and L-Isoleucine was appreciably poor effect. After incubation the hydrogen Ion concentration altered it's formal medium concentration into weak acidity. 4. In the effect of phosphate sources on the growth of this bacteria, Potassium phosphate mono-basic was effective. Sodium phophate tri-basic, Ferric phosphate and Potassium phosphate di-basic showed comparatively good results but Ammonium phosphate mono basic and Calcium phosphate tri-basic proved less effective. After incubation the hydrogen Ion concentration of this medium was altered into weak acidity. 5. As for the effects of micro metal sources on the growth of this bacteria, optimum concentration in each micro metal sources showed the following; Ferrous sulfate 100(㎎/100ml), Zinc sulfate 0.1(㎎/100ml) Curpric sulfate (㎎/100ml). Magnesium Chloride 10(㎎/100ml) Manganese sulfate 10(㎎/100ml), Natrium Melybdae-nium(㎎/100ml), Calcium Chloride 10(㎎/100ml) and Boric acid 1(㎎/100ml). Among these micro metal sources, ferrous sulfate, Zinc sulfate, Manesium chlorid0 and Natrium molybdaenium showed especially best results, followed by Calcium chloride, Manganese sulfate and Cupric sulfate. The Boric acid showed poor effects. Also in the medium to which no metal sources were added the growth of this bacteria was ineffective. After incubation the hydrogen Ion concentration generally changed into weak acid. 6. In the effect of Potassium phosphate mono basic and Potassium phosphate di-basic concentration on the growth of this bactecia, Potassium phosphate mono-basic showed the best result when concentration 0.1(g/100ml) was added in the basal medium. No addition of phosphate to the basal medium was appreciably decreased and followed by Potasium phosphate di-basic 0.01(g/100ml). The growth of this bacteria was much enhanced when concentration of Potassium phosphate mono basic 0.1(g/100ml) and Potassium phosphate di-basic 0.05(g/100ml) were added to the basal medium and the growth diminished when concentration of Potassium phosphate mono-basic 0.5(g/100ml) and Potassium phosphate di-basic 0.01(g/100ml) were added to the basal medium. After incubation the hydrogen Ion concertration of medium generally changed into acidity.

제10회 ASIAN GAMES의 TENNIS 운영결과분석

서국웅,이종규 釜山大學校 附設 體育科學硏究所 1987 體育科學硏究所 論文集 Vol.3 No.-

혐기성 매립조와 준호기성 매립에서 도시폐기물의 생분해 특성에 관한 비교 연구

송종민,박종웅 경산대학교(대구한의과대학) 1999 環境硏究 Vol.4 No.1

The objective of this study is to compare the biodegradable characteristics of municipal solid waste in the anaerobic and semiaerotac column. The experimental investigations were to conduct such tests as leachate, gas production and composition, and stabilization during 70 weeks. The initial concentration ranges of BOD and COD in anaerobic column were decreased from 57,000∼64,000㎎/ℓ, 80,000∼87,000mg/ℓ to 6,100㎎/ℓ, 8,100㎎/ℓand those in semiaerobic column were decreased from 7,800∼15,400㎎/ℓ, 11,400∼16,200㎎/ℓto 22.0㎎/ℓ, 300㎎/ℓ. The concentadon ranges of T-N, NH4+-N, and T-P in anaeobic column were decreased from 2,000∼2.400㎎/ℓ, 1,500∼1,800㎎/ℓ, 250∼300㎎/ℓ to 225㎎/ℓ, 185㎎/ℓ, 70㎎/ℓand those in semiaerobic column were decreased from 1,100∼1,400㎎/ℓ, 1,000 -l3OO㎎/ℓ, 11.1~28.8㎎/ℓto 220㎎/ℓ, 16㎎/ℓ, 3.2㎎/ℓ. The leaching amounts of BOD, COD, T-N, and T-P in anaerobic column were shown 22, 11, 1.4, 9.7 times larger than those in semiaerobic column, respectively. The settlement rate and decreasing weight, as stabilization and biodegradation index of solid waste in semiaerobic column, were shown 2 times more remarkable difference than those values in anaerobic column. Based on BOD, the decay coefficient of organic matter in seniaerotac column was shown 3.2 times more rapid than those in anaerobic column. Gas production in anaerobic column was rapidly increased after 28 weeks, the characteristics consisted of H₂, CO₂, N₂, CH₄and the components of gas were 0.24%, 27.5%, 36.8% and 22.1%, respecctively. Gas production rate constant k(week-¹) calculated from equation(3) was 2.4xl0-⁴ and carbon conversion rate was 2.3%.

보조권선을 이용한 SRM의 소음진동저감 운전에 관한 연구

이종근,유충웅,최태완 진주산업대학교 1999 論文集 Vol.38 No.-

The main vibration source of SRM drive is generated by rapid variation of radial force when phase winding current is extinguished for commutation action. So the rapidly variation of radial force is repressed firstly to reduce vibrating force of SRM drive. This paper suggests the vibration reduction method, where SRM with unidirectional auxiliary winding is excited by a three stage commutation method at commutation period. This reduction effect of vibration is verified with the result obtained in the test of prototype machine.

광학 시스템을 이용한 Gantry Stage의 열변형 오차를 고려한 실시간 보상 실험

조웅,송춘삼,김종형 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-

This paper suggests method to measure that error of the precision stage is used precision process and measurement equipment by using camera optics. The laser interferometer is the most widely used sensing unit to measure the position error. It measures the positioning error from the displacement of a moving reflector in terms of the wave length. But, the wave length os affected by the variation of atmospheric temperature. Temperature variation of 1℃ results in the measuring error of 1ppm. Though laser interferometer measures position error of stage when precision stage is manufactured by us or it is used to measure stage for the nonce as a general rule, optics tooling position measurement method to suggest is possible to apply in real-time and trace an error range continually. Therefore it is able to improve capabilities of equipment by compensating an error range when operates precision process and measurement equipment in real-time. From the experiment, it is confirmed that the measuring error of the optical device can be improved from 5.8㎛ to 1㎛ by the application of the method.

생활폐기물의 배출원별 발생량 및 질적 특성

박종웅,권기홍,박상철,유호원,이학영 경산대학교(대구한의과대학) 1998 環境硏究 Vol.3 No.1

This study aims to investigate generation and physicochemical characteristics of Municipal Solid Wastes(MSW) generated from different sources in Kyungju. The source are apartments(low, high-rise), single family houses(centra1, outer), traditional market, office(city hall), factory, school, Park. The unit waste discharge rate of residential MSW excluding recyclable solid wastes was 0.47 kg/(capita . day). The maximum coefficients of variation for month and season were 1.23, 1.17, respectively. The bulk density of solid wastes was largely different for each sampling site, and the bulk densities of apartment district, single family house district and public area were 232㎏/m, 247kg/m, 170kg/m, respectively. The load factory of vehicle was 457kg/m. The percentage of combustible material to solid wastes was 86.5%. The physical compositions of solid wastes were food of 36.2%, Paper of 32.3%, plastic of 11.9%, glass of 6.5%, metal of 4.6%, textile of 3.0%, rubber of 1.8% and wood of 1.3%. The proximate analysis results of solid wastes showed moisture of 45.7%, volatile solids of 45.2%, and ash of 9.1%. In case of moisture content, the maximum value showed 66.7% in high-rise apartment district and the minimum value 14.0% in school district. Carbon, hydrogen, oxygen, nitrogen, sulfur and chlorine contents of combustible solid wastes were 48.4%, 7.0%, 25.9%, 1.3%, 0.2% and 0.4%, respectively. The low heating values of combustible solid wastes were 1,365 ~ 2,896kca1/kg (average 1,892kca1/kg) in residential area and 1,200∼3,878kca1/kg (average 2,178kca1/kg) in public area. Especially, the generation rate and the moisture content of residential MSW separating food wastes decreased 2.7 and 1.7 times and the low heating increased 2.1 times in apartment district.

大學敎養課程의 改善에 관한 硏究 : 構成上의 問題를 中心으로

咸宗圭,金光雄 淑明女子大學校 1983 論文集 Vol.24 No.-

Purpose of the present study is to investigate constitutional problems involved in liberal arts courses of higher education in Korea and to discuss the idea for their betterment. Cultural subjects of 38 universities and colleges were analyzed and evaluated by the present researchers for this purpose. Cultural studies of higher education must be improved continuously to adjust endless social changes. Today, the improvement of liberal arts is more seriously discussed than earlier times because of heavy emphasis upon education for the whole man. Results of the present study summarized as follows: 1. Although liberal arts have to involve the subjects of human sciences, social sciences, natural science and arts equivalantly, many universities and colleges over emphasize upon language courses and some subjects of human sciences such as the Korean language, English, philosophy, history and the German or the French language. One-Sideness of cultural subjects should be revised from the point of education for the whole man. 2. Many universities have limited elective subjects in the course of liberal arts. For the development of individuality of students, the course of liberal arts should be reorganized to minimize obligatory subjects and to maximize optional subjects. 3. Many universities have a few subjects representing the characteristics of korean culture. And also many universities scarcely have any subject to represent their university identity. Cultural studies of higher education must be reconstructed to develop national and university identity. 4. Cultural subjects of many universitie seem to be organized without careful consideration of articulation with the curriculum of high school. Therefore liberal arts of many universities need to be reexamined from the point of vertical articulation and crossing relevance.

수종 식물추출물의 항히스타민작용

이신웅,이윤주,손종근 영남대학교 약품개발연구소 1996 영남대학교 약품개발연구소 연구업적집 Vol.6 No.-

The antihistaminic action of eighteen herbal medicines was investigated by the radioligand binding and functional assays. The hexane fractions of Trichosanthis radix, Mori cortex radicis and Evodiac fructus dose-dependently inhibited [³H]mepyramine binding to H, receptor in guinea-pig brain homogenates and histamine-induced contraction of isolated guinea-pig ileum. Antihistaminic action of the hexane and ethyl acetate fractions of Mori cortex radicis and the hexane fraction of Evodiae fructus was more potent than their antimuscarinic action evaluated from the inhibition of [³H]QNB binding and carbachol response. The ethyl acetate and chloroform fractions from Scutcllariae radix also inhibited histamine-induced contraction, but antihistaminic potencies of these fractions were almost identical with their antimuscarinic potencies. The hexane fractions of Mori cortex radicis and Evodiae fructus inhibited selectively the increase of histamine-induced cutaneous vascular permeability in the rat dorsal skins. However, the ethyl acetate fraction from Scutellariae radix inhibited eqipotently the effects of histamine and serotonin on the vascular permeability. These results demonstrate that the hexane and ethyl acetate fractions of Mori cortex radicis and the hexane fraction of Evodiae fructus have the selective histamine H₁ receptor blocking activity.

악골 및 연조직에 발생한 혈관종 치험례 : 5증례 보고

엄인웅,김명진,김종원,민병일 대한악안면성형외과학회 1986 대한악안면성형외과학회지 Vol.8 No.1